defers • generics • GC • map, slices • performace • java < go < c/c++ Vitess Features • dynamic resharding • auto-failover • row-cache • limit inefficiency SQL • more client connection • Structure Vitess Resharding • read scaling up ? —> replica • write scale up ? —> split • dynamic shard • scale • less than 5 seconds read-only downtime Vitess Resharding • shard0, shard1

convention. When sharded, a keyspace has N shards with non-overlapping data. Resharding Vitess supports dynamic resharding, in which the number of shards is changed on a live cluster. This can be either splitting one or more shards into smaller pieces, or merging neighboring shards into bigger pieces. During dynamic resharding, the data in the source shards is copied into the destination shards, allowed to catch management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

it’s converting from/to. 61 Supported character sets The list of supported character sets is dynamic and may grow. You will find it under CharacterSetEncoding in https://github. com/vitessio/vitess this would make it very hard for monitoring tools because they are not very good at dealing with dynamic variable names. 87 HTTP endpoints A TabletServer exports a variety of http endpoints. In general management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

this would make it very hard for monitoring tools because they are not very good at dealing with dynamic variable names. HTTP endpoints A TabletServer exports a variety of http endpoints. In general, management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

this would make it very hard for monitoring tools because they are not very good at dealing with dynamic variable names. HTTP endpoints A TabletServer exports a variety of http endpoints. In general, management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

this would make it very hard for monitoring tools because they are not very good at dealing with dynamic variable names. 62 HTTP endpoints A TabletServer exports a variety of http endpoints. In general management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability

management GUI – Designed to work in multiple data centers / regions • Sharding – Virtually seamless dynamic re-sharding – Vertical and Horizontal sharding support – Multiple sharding schemes, with the ability